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10 votes
How do the isotopes hydrogen-1 and hydrogen-2 differ?

Hydrogen-2 has one proton; hydrogen-1 has none.
Hydrogen-2 has one neutron; hydrogen-1 has none.
Hydrogen-2 has one more electron than hydrogen-1.
Hydrogen-2 has two protons; hydrogen-1 has one.

asked
User Hkn
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1 Answer

6 votes

it is AExplanation because a+w=a

answered
User Joricam
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7.9k points
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